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A.H.RAPP. DEVICE FOB. SEGURINGv TOOLS IN STONE GHANNELNG MAGHINBS,

No. 291,227. Patented Jan. L, 1884.

. UNITED STATES:

ALMIRE H. RAPP, 0E rARis, FRANCE,

ASSIGNOR TO ALLSTON GER-RY, (IN.

DIVIDUALLY AND As4 TRUsTEn) Vor NEW YORK, N. Y.

' DEVICE FOR SECURING TOOLS IN STONE-CHANNELING MACHINES.

' SPECIFICATION forming part of LettersIPatent No. 291,227, dated January 1, 1884 Application filed February 21, 1883. (No model.)

To all whom it may concern.:

Be it known that I, ALMIRE E?. RAPP, a citizen of the United States, atpresent residing in Paris, in the Republic of France, have invented certain new and useful Improvements in Devices for Securing Tools in StoneChan neling Machines; and Ido hereby declare that the following'is a full, clear, and exact description of the same.

My invention consists in certain improved. means of securing the tools in the tool-slide or carrier, whereby they are very irmly held therein while at work, but facility is afforded for their easy release and readjustment when necessary.

The accompanying drawings form part off' this speciicatiomwhere similar letters of reference indicate like parts, and where- Figure l is a front view of part of the framework of a stone-channeling machine with the slide in position, and having my improved clamping device attached. Fig. 2 is a crosssection taken on the line :l: x, Fig. l. Fig. 3 isv a similar view taken on the line y y, Fig. l. Fig. 4 is a cross-section of the cutters or tools, taken on line c c, Fig. l, and showing one of my improved means for keeping the lower part of the same securely together. Figs. 5 and 6 are views showing another of my improved means for securing the lower part of tools or cutters.

` A A represent the two sides of the framework of a stone-channeling machine intended to-be supported upon a suitable bed-plate. (Not shown.) Between these two sides A A the tool slide or carrier B moves. This carrier is recessed or grooved at each side to fit flanges or projections B of the frame A A. Inthe upper portion of the face of the slide or carrier a recess is formed,iuto which is inserted a piece of leather or other analogous elastic or yielding substance,` b, and in a similar recess near its lower end a like piece of leather or other substance, b2, is inserted, so as to protrude about one-eighth of an inch from the face. Into the slide or carrier at the back of the lower recess are firmly secured, side by side, pins C, which protrude through the packing-piece b2, and each of which is adapted to fit in either one of aseries of holes, 5o

c, provided at regular intervals apart in one of the tools or cutters, the several tools or cutters being each provided with similar holes c, which are for the purpose of enabling the tools upon the carrier to be adjusted all alike,

and to enable them all to be lowered equally from time to time, as the increasing depth ofthe channel being cut may require. To the slide or carrienB, near its upper and lower ends, in

position to come opposite the packing-pieces b 6o b2, there are secured the clamping-plates D D, each of which is pivoted at one end on astudbolt, d, projecting from the face of the slide or carrier B, near one side thereof, and is made with a slot, d', at the other end,to formahook 65 within it. The said stud-bolts are provided 7c with nuts d3 outside of the clamping-plates. The tools, when placed against the elastic or yielding packing-pieces b b2. each with one of its holes on one of the xed pins C, are secured by bringing the clamping-plates from the pendent position in which the lower one is shown in Fig. l to the position in which the upper one is shown in the same figure-viz., hooked on the bolt d. The nuts di, which are always on the bolts d, are then screwed up hard against 8o the clamping-plates, which then hold the tools very securely, no loosening of the nuts by the jarring consequent on the percussive action of the tools being permitted, such loosening being prevented by the elastic or yielding pack- 8 5 ing-pieces b b2 behind the tools and opposite the clamping-plates.

E E are two clamping-plates, which, with their connecting-pins e e, constitute one eX ample of my improved clamping devices ap- 9o plied to the group of tools below the slide or carrier. These plates may be hinged together permanently by one of said pins, the other pin being removable to permit the clamp to be placed or adjusted on and removed from the tools. The latter pin may be tapered and split, as shown in Fig. 1, and the holes in the clamping-plates 'be so formed that the wedgelike action of the taper pin may dran the plates tight upon the tools. This clamping device is especially advantageous when the tools are projected a long way below the slide or carrier, as in a deep channel7 as it makes them brace each other against springing,` or bending.

rlhe modiiication of the clamping device shown in Figs. 5 and 6 consists simply in a screw-bolt and nut passed through holes in the several tools and clamping them together by the screwing up of the nut.

Although I have described my invention as adapted for use in a stone-channeling machine, it must be understood that the same is applicable to other machines Where the tools are required to be held in position by face-pressure, and which require to be removed from time to time for purposes of adjustment or otherwise.

Having thus described my invention7 what 1. The combination, with the tool slide or carrier of a stone-channeling machine having ixed pins or projections on its face, and tools having in them holes to receive the said pins, of a clamping-plate attached to the carriage opposite said pins, and a packing-piece which is applied between the carrier and clamping-plate, and through which the said pins or projections pass, substantially as herein described.

2. The combina-tion of the tool slide or carrier B, provided with the ixed pins CV the screw-bolts cl d, and the elastic or yielding facing-pieces b b2, the tools provided at intervals with slots or holes c to receive the said pins C, and the hooked and pivoted elamping-plates D D, andthe bolts d d and nuts d, substantially as herein described.

ALMIRE H. RAPP.

Witnesses:

Fannie Harms, En. L. Menu. 

